1345978908 has 36 divisors (see below), whose sum is σ = 3458117208. Its totient is φ = 441303840.

The previous prime is 1345978897. The next prime is 1345978919. The reversal of 1345978908 is 8098795431.

It is an interprime number because it is at equal distance from previous prime (1345978897) and next prime (1345978919).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304266 + ... + 308657.

Almost surely, 2^1345978908 is an apocalyptic number.

1345978908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1345978908 is an abundant number, since it is smaller than the sum of its proper divisors (2112138300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1345978908 is a wasteful number, since it uses less digits than its factorization.

1345978908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612994 (or 612989 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 1345978908 is about 36687.5852026268. The cubic root of 1345978908 is about 1104.1110375873. Note that the first 3 decimals are identical.

The spelling of 1345978908 in words is "one billion, three hundred forty-five million, nine hundred seventy-eight thousand, nine hundred eight".